I finally re-installed my passenger side fender flare last night.
The fender trim that came with my running boards didn't contain the 4.8is flares. Let me assure you the truck looks super goofy with only the rear part of the flares installed. I was able to disassemble my original, non-running board trim to remove the flare piece and reinstall, but on the passenger side the clips broke and fell out. I ended up fabricating new ones with sheet metal and a dremel then swamping the damn thing with epoxy. End result is it's locked on tight and I'm not longer missing a hip.
Now to find the lemans flairs for the front.